# -*- coding: utf-8 -*-
# https://blog.csdn.net/weixin_52040868
# 公众号：测个der
# 微信：qing_an_an

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import pyqtSignal


class QWIN(QWidget):
    btn_clicked = pyqtSignal()

    def __init__(self):
        super(QWIN, self).__init__()
        self.resize(330,50)
        btn = QPushButton("关闭",self)
        btn.clicked.connect(self.btn_click)
        self.btn_clicked.connect(self.btn_close)

    def btn_click(self):
        self.btn_clicked.emit()

    def btn_close(self):
        self.close()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = QWIN()
    win.show()
    sys.exit(app.exec_())
